It belongs to family of dinosaurs acknowledged as carcharodontosaurs, greatest known for their shark-like teeth. Named Ulughbegsaurus uzbekistanensis, it was at the very least 22 ft (seven meters) long and weighed much more than a ton (1,000 kilograms) and would have roamed Central Asia about 90 million several years ago.
The jawbone fossil was believed have been unearthed in the 1980s and located its way to the Condition Geological Museum in Tashkent, Uzbekistan but its importance was not acknowledged right until 2019, said Darla Zelenitsky, an affiliate professor of dinosaur paleobiology at the University of Calgary in Canada.
The researchers from Canada, Japan and Uzbekistan named the new genus and species Ulughbegsaurus (oo-LOOG-bek-Observed-rus) uzbekistanensis, following the 15th century mathematician and astronomer Ulugh Beg.
“More than 90 million many years in the past, apex predators of Asian and North American ecosystems were being generally massive species of carcharodontosaurs recognised as shark-toothed dinosaurs, which have been later replaced by huge tyrannosaur species, akin to T. rex, someday about 80 (million) to 90 million a long time ago,” reported Zelenitsky in a assertion.
“Both of those of these teams of dinosaurs were being meat-eaters that experienced sharp enamel and walked on two legs, even though tyrannosaurs, in basic, were far more closely created.”
How tyrannosaurs progressed to switch carcharodontosaurs at the best of the foods chain in these areas just isn’t very well understood for the reason that of a patchy fossil document for the early component of the Late Cretaceous some 80 to 100 million many years back. Apex predators are ordinarily less in variety than the animals they prey upon, which could make clear why their fossil remains are extra tricky to find in some historical ecosystems, Zelenitsky spelled out.
Zelenitzky stated Ulughbegsaurus would have shared the ecosystem with a modest species of tyrannosaur called Timurlengia.
“Proof all informed, implies that the carcharodontosaur species have been outsizing or “preserving down” the tyrannosaur species in ecosystems of Asia and probably North America continue to just prior to their extinction about 90 million yrs in the past,” Zelenitsky mentioned in an e-mail.
The extinction of carcharodontosaurs permitted tyrannosaur species to choose above the apex predator function in Asia and North The united states 80 million to 90 million a long time in the past. They persisted in substantial varieties like T. rex right until a huge asteroid hit the Earth close to 66 million years ago, dooming most dinosaurs to extinction.